Question

me pueden responder esta ecuación de suma y resta
x+3y=1
x+y=3

Answer 1

X+3y=1
-3(x+y=3)
—————
X+3y=1
-3x-3y=-9
—————-
-2x+0y=-8

-2x=-8
X=-8/-2
X=4

Y=3-x
Y=3-4
Y=-1

X=4
Y=-1

Answer 2

Hola !! ^^

=> Sistema de ecaciones 2x2 :

x + 3y = 1

x = 1 - 3y

x + y = 3

x = 3 - y

=> Igualamos "x" :

1 - 3y = 3-y

1 - 3 = 3y - y

-2 = 2y

-2/2 = y

-1 = y

=> Hallamos "x" :

x = 3 - y

x = 3 - (-1)

x = 3 +1

x = 4